2166044054025 has 48 divisors (see below), whose sum is σ = 3584912900096. Its totient is φ = 1154024262720.

The previous prime is 2166044054003. The next prime is 2166044054093. The reversal of 2166044054025 is 5204504406612.

It is not a de Polignac number, because 2166044054025 - 2¹² = 2166044049929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 431222664 + ... + 431227686.

Almost surely, 2^{2166044054025} is an apocalyptic number.

2166044054025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2166044054025 is a deficient number, since it is larger than the sum of its proper divisors (1418868846071).

2166044054025 is a wasteful number, since it uses less digits than its factorization.

2166044054025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9862 (or 9857 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 2166044054025 in words is "two trillion, one hundred sixty-six billion, forty-four million, fifty-four thousand, twenty-five".